Note: Descriptions are shown in the official language in which they were submitted.
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lever-oaerated Sorav Pum
Ttte invention relates to a hand lever-operated spray pump, particularly for
the purpose of
attaching to bottles or similar, having a pump plunger that moves linear in a
pump chamber on
the housing side. The pump plunger is connected with the hand lever at the
rear of a mouth
piece opening and the pump plunger returns to the starting position as a
result of a spring
loading.
A spray pump of this type is specified in US-PS 4,955,511, where the hand
lever is a trigger lever
which is rigidly connected with the pump plunger. This causes a tendency for
the pump plunger
pump chamber unit to tilt.
US-PS 3,7213,442 specifies a hand lever-operated spray pump whose hand lover
is arranged on
a pivoting bearing by means of a fork recess / peg engagement on the housing
side. Separated
by a space thereto, it acts via a living hinge in conjunction with a
transmitting part provided on
the upper side acting upon the pump chamber, which Is a bellows-type pump in
this case. The
transmitting part is connected to the housing on the side opposite to the
mouth piece by means
of an additional living hinge. A finger on the transmitting piece closaslopens
an air compensation
opening.
It is the object of the invention to provide a hand levee operated spray pump
of the shove type
which is functionally r~elfable and structurally simple.
This problem is solved substantially with a hand lever operated spray pump
having the
characteristics of Balm 1, provided that two hinge points are allocated to the
hand lever
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one of which is moving non-rotating on the housing side in a linear guide
provided on the housing
side, and the other is attached to the housing on the side opposite to the
mouth piece in such a
way that both hinge points are connected via~ero brjs(o_e ~ectionQ ~~at buckle
with respect to each
other. Thisprevents t,e lau_m_hnlunger from tilting. The hand lever performs
an overriding
movement: swiveling plus shifting. The respective linear guide is defined by
the guide on the
housing side. The resulting convergence of the two hinge points is compensated
simply in that
the bridge sections buckle or fold. This movement can even be utilized as a
force for restoring
th~"pumo I umler to its staAlng oosition by means of a hand lever couenng. The
bridge sections'
buckling movement may then be utilized for an additional function in that one
bridge section
supports the sealing part for a ventilation aperture which leaves its seating
position with rospect
to the ventilation aperture during the buckling process. This solves the
problem of air
compensation by the easiest possible method. As the buckling process takes
place only when
the pump is activated, this provides for a space-saving outline in non-
operating position, offering
both storsge and packaging advantages. According fo the subJect matter of
US~PS 3,726,442,
the overall size of the spray pump decreases only when it is adlvated. In
addition, the invention
pro sea to rovide a livin hin a point between the two brid a tlons, thereby
eliminating the
need for classic axes. The sewn r ge sec ion is then further developed such
that it
represents the connector on a U-profiled part that encompasses the housing in
a U-shape. This
provides a strong coupling for the bridge.
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In addition, the design is characterized by a locking connection from the U-
profiled part toward
the housing. In order to prevent that this locking point is required for the
purpose of achieving the
required flexibility for the respective bridge section, the hinge point,
located on the side of the
spray pump opposite to the mouth piece, is a living hinge adjacent to the
place of the locking
connection. This also prevents any movements caused by the bridge sections'
movement to be
transferred to said place. In addition, a proposal is made, which has its own
significance,
according to which the pump plunger continues tapering approximately up to the
mouth piece
where it is in form-fit connection with a mouth piece cap and that, between
the two parts, s
discharge valve is provided in the form of a moldable nrbber piece. This
represents a structural
simplification, allows easy assembly and requires fewer parts. The rubber
piece is of the type
which remains closed until a certain high pressure response threshold is
reached at which time it
opens abnrptly. This results in a powerful spray, especially if the rubber
piece is mounted on the
front end of the pump plunger and is equipped with a collar which expands as a
rosult of the
prossure caused by the Huid, and if it has axial flow-Ihrough cross sections
in a disk-shaped part.
These cross sections are connected with the mouth piece opening in that the
mouth piece cap is
rotated. This should be based on eccentricity in order for the spray pump to
be superior with
respect to media losses as well. It is advantageous if the spray pump housing
is attached to the
bottleneck by means of a plug-inlclip connection substituting the normally
used swivel nut. With
the attachment of a collar, the plug-in connection is able to simultaneously
function as a sealing
connection.
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In addition, the spray pump as per the invention is characterized by a disk-
shaped inlet valve
having a valve locking piece which is supported by crosspieces. The pump
plunger restoring
spring is supported by said crosspieces. The opposite end of the spring moves
against a cross
section-decreasing shoulder in the interior of the hollow pump plunger which
trails on the wall of
the pump chamber with the edge of the larger cross section opening. This edge
is preferably a
sleeve-like lip. It is also advantageous to equip the pump plunger with
lateral pockets for the
hinge point on the hand lever side. The hand lever axle stubs passing through
the linear guide
are inserted in the pockets. An advantageous variant of an air compensation
system is the
utilization of the pump plunger. According to this variant, the hou ' y wall
of the ump chamber
~nrnvided with a ventilation aEerture extendin4 into ~,h.~.jnt~fiQS.of the
boUle~.St)Lhali~e pump is
in its starti_ngr~.siti_Qn_~the apertu~e~ which_is.located directly_behind the
edge of the"eump
plunger, is closed h~e..pirt~p.ptungef~,and op~n;s. when. the pump pl~~g~~is
activated. This
provides for an additional pump plung~~er function. It acts as a slide. his
doss not even require
sin well is co ~uslyr leading. It s,gffices to equip the pump elun ~er ~with
two pislon rings hich in t a ~m~c~plunoer startin~a position, are located on
either side~e
m ilation aperture. This decreases the friction against the pump plunger and
favors the desire easy ac vation of the trigger pump. There is an added
advantage in that, as a
result of creating the ring space, the pump plunger, positioned in the
direction of discharge, acts
as a seal with relation to the pump chamber, for example in the event of
excess pressure in the
bottle which may be generated by heat.
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An advantageous further dwelopmenl should be noted with respect to the inlet
valve. This
development is achieved by a disk-shaped inlet valve body which is symmetrical
with relation to
the disk center plane. The respective mirror symmetrical loan permits the use
of either side of
the inlet valve body, thereby preventing any assembly mistakes or re-work
requiring that a side
inverted inlet valve be reversed. Regardless of ils allocation, the desired
valve function is always
reliable. It is also advantageous for the valve locking body of the inlet
valve to be barrehshaped
having hemispherical ends on both sides. The valve locking body is located in
the center of the
disk-shaped inlet valve body. Furthemnore, the discharge valve is also further
developed which is
characterized in that the discharge valve is covered by the mouth piece cap
and that il is
equipped on the fore-part with supply channels leading toward the mouth piece
opening. The
supply channels can be closed by rotating the mouth piece cap. This is
achieved in that the
discharge valve is a moldable rubber piece which is equipped with a stem. One
end of the slem
supports a valve disk while the other end is equipped with a cylindrical
stopper part having
diametrically opposed flattened parts that ueate channels. Supply channels
lead from the front of
the flattened parts to a central swirl chamber. Due to its larger mass of
material the stopper part
is virtually not moldable so that the channel cross sections remain largely
unaffected despite the
pressure caused by the media, while the valve disk provides the flexibility
and re:toting force
required for the valve function.
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For the purpose of locking it is advantageous for the swirl chamber to be
eccentrical, resulting in
a congnrent position with the mouth piece opening, which is also eccentrical,
and the ability to
leave this position which results in blocking the discharge path. Finally,
with rasped to the axis of
the second bridge section, it is proposed to use a hook for the locking
connection on the housing
side for the second buckling bridge section. The hook is adjacent to a
supporting crosspiece
whose front surface forms the hinge point in that it is thrust against a
housing console at the rear.
It is structurally advantageous for the hook to pass through a hole in the
rear housing console,
and that the supporting crosspiece, which is located behind the hole and which
croates the hinge
point and runs substantially parallel with the shaft of the hook, forms the
end of the second
buckling bridge section. The close proximity between the supporting crosspiece
and the hook
provides for sufficient play to allow the bridge sections to buckle. Added to
that is the flexibility
and restoring force of the material used, i.e. synthetic material.
The subject of the Invention is described below in more detail by means of
r9tn exemplary
embodiment illustrated in the drawings, as follows:
Fig. 1 the spray pump of the invention used on a bottle, in starting position;
Fig. 2 the same spray pump in operation;
Fig. 3 the pump in starting position in vertical profile with dash-dot lines
suggesting the
operating position;
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Fig. 4 the pump plunger shown individually, in perspective, including the
discharge valve and
the mouth piece cap in exploded view;
Fig. 5 a spray pump variant in starting position, in veAical profile;
Fig. 6 the same spray pump, also shown in vertical profile, in operating
position;
Fig. 7 a modified discharge valve, shown in perspective, further enlarged with
rospect to Fig. 6,
and
Fig. 8 a separate illustration of the inlet valvo as seen from top, also
further enlarged with
respect to Fig. 8.
A spray pump 3 is allocated to the neplc 1 of a bottle 2. It is a so-called
trigger pump,
representing a standing unit in the form of a dispenser for dispensing a
powerful spray.
The core of the spray pump 3 is the housing 4, which extends in the manner of
a hammer head
transverse to the neck 1 which is substantially vertical. The neck 1 is
grasped to provide counter
support. A hand lever 5, projecting toward the underside of the housing 4, is
located in the range
of action of a respective holding hand.
The hand lever 5 swivels about a horizontal first hinge point I of the
activation mechanism, i.e, it
is pulled agaMst the neck 1. This takes place against a spring loading which,
upon release,
aMraya returns the hand lever 5 to the starting position as shown in Fig. 3.
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The activation position is shown in Fig. 3 with dash~dot lines.
The hand lever 5 is coupled to a pump plunger 6 which moves in a pump chamber
T that forms a
pump cylinder.
The connection between the hand lever 5 and the pump plunger 6 is such that
the hand lever 5,
in addition to the above mentioned swiveling movement, shifts linear in the
pump chamber
together with the pump plunger 6. The respective displacement acts against the
expansive
power of a pump plunger restoring spring t3 which is located in the pump
space. This spring is a
threaded pressure spring.
The overriding movement made by the hand lever 5 is realized via a linear
guide on the housing
side. Longitudinal slits 10 begin at the tube-shaped end of the housing 4.
This end faces the
mouth piece opening 9 of the spray pump 3. The longitudinal slits 10 are open
toward the front
edge of the tube and extend diametrically in Longitudinal diroclion. Their
horizontal depth defines
the operating stroke in that the axle stubs 11 of the hand lever 5 which
create the physical hinge
point I move against the interior slit bottom 12.
The axle stubs 11 traverse the longitudinal slits 10, which are arranged in
pairs, and at the end
they engage in respective pockets 13 provided on the two longitudinal sides of
the pump plunger
6. This results in driving the pump plunger 6 in the sense that the volume of
the pump chamber 7
decreases.
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The hand lever 5 is connected with the housing 4 by means of a link chain. In
actuality, this is
achieved in that two hinge points are allocated to the hand lever 5, the abovo
montioned hinge
point I and a second hinge point, designated with II, which is located on the
side of the pump
housing 4 opposite to the mouth piece opening 9.
The two hinge points I, II are connected by means of twe bridge sections a b
that buckle with
relation to each~er. The buckling position is seen in Figs. 2 and 3. In order
to permit the bridge
~._ sec ns a, b to buckle respectively opposite to the housing 4, they are
connected vita hinds
~omt 15 hrch may be a living hinge. The respective V-notch 15' continues into
the cheek-like
-~~[~~,~~ 16 of the cap-like bridge section b and also into the shield-like
root section ~Torthe
hand lever 5. The coaxially oriented axle stubs 11 are attached to the insides
of the root section
17.
Consequently, the bridge section b which changes to the substantially vertical
side walls 16 is U-
shaped.
In contrast, the root section 17, which is attached to the bridge section a
and represents a part
thereof, is closed toward the grip section of the hand lever 5 allowing the
tube-shaped end of the
housing 4 to pass freely. This provides a plug-in hole 18 for the purpose of
assembly.
The bridge section designated with b supports a locking part 19 which tightly
seals a congruently
positioned ventilation a~etiure 20 in, the pump st rt n os~t~o"~ n:
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The ventilation aperture 20 joins a connecting channel 21 which passes through
the housing 4 in
vertical direction and which is connected with the interior 22 of the bottle
2. When the bridge
sections a, b, buckle, as shown in Fig. 2, the locking part 19 on the bridge
section b lifts oft from
the ventilation aperture 20. The partial amount of the fluid substance 23
discharged from the
bottle 2 in this position is thus supplemented with air.
As shown in Fig. 3, the hinge jointed bridge sections a, b are resting tightly
on the level,
horizontal upper side 24 of the housing 4 when the spray pump 3 is in staking
position. When the
discharge is activated, the bridge sections a, b move roof-like outward away
from the upper side
24, proceded by the living hinge point which was created in the area of the
hinge joint 15,
however, without giving up the lateral support from the lateral walls 16 of
the bridge section b
provided by the guide support on the verllcal walls of the pump housing 4, or
the respective
support from the two root sections 17.
The free end of the second bridge section b opposite to the mouth piece
opening 9 is provided
with a downward directed U-profiled part 25. It also represents an extension
of the U-shaped
cross section design of the second bridge section b, so that the second bridge
section b
represents the connector of the U-profiled part which encompasses the housing
4 in a U-shape.
One locking peg 26 each Is provided on the insides of the U-sections of the U-
profiled part 25.
The peg 26 engages in a counter locking contour 27. The respective locking
connection between
the U-profiled part 25 toward the housing 4 is illustrated particularly
clearly in Fig. 3. The counter
locking contour 27 is provided with an opening 28 which faces away from the
mouth piece
opening 9.
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The opening's 28 inside diameter is somewhat smaller than the cross section of
the circular peg
2t3.
At the level of the second hinge point II the U-profiled part of the link
chain is horizontally and
longitudinally slit up to the U-connector, i.e, the U-sections. The
longitudinal slit has reference
No. 29 and provides a peripheral material bridge.
The second hinge point II repfe~ents a living hinge. The V-notch slopes
outward and is clearly
diverging. The hinge point II, which is located on the side of the housing 4
opposite to the mouth
piece opening 9, is slightly above the place of the locking connection 26127.
Beginning at the actual cylindrical plunger section of the pump plunger 6 the
latter continues
tapering from an eccentric shoulder 30 approximately to the mouth piece
opening 9. This is a
type of plunger shaft 31 which adds a connecting channel 32 between the pump
chamber 7 and
the mouth piece opening 9. On the side of the mouth piece, the pump plunger 6
is connected
with a mouth piece cap 33. It is a form-fit connection. The cap 33 is clipped
on irreversibly, which
is achieved by means of a pot-shaped ring collar 35 attached to the casing of
the plunger shaft
31. The ring collar's 35 pot-shaped wall defines the tube-shaped front end 36
of the hollow
plunger shaft 31 or of the pump plunger 6, respectively.
A discharge valve V1 in the form of a moldable rubber piece is housed iwa
space between the
front end 36 and the attached mouth piece cap 33.
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The rubber piece has a collar 37 which is plugged onto the tube-shaped front
end 36 of the pump
plunger 6. In addition, the rubber piece is provided with an integrally
attached disk-shaped bass
part 3$ containing axially oriented flow-through cross sections 39. These are
connected with
supply lines 40 leading to the mouth piece opening 9 in that the rotating
mouth piece cap 33 on
the ring collar 35 of the pump plunger 6 is rotated. The respective open and
close positions are
defined by a stop. The front edge of the mouth piece cap 33 keeps the pockets
13 on the side of
the mouth piece opening closed.
The flow-through cross sections 39 and the supply lines 40 are eccentrical
with respect to a
horizontal rotational axis x-x of the pot-shaped mouth piece cap 33. The axis
is identical to the
longitudinal center axis of the pump plunger 6.
The locking valve V1 also acts as a tube valve in that the collar 37 expands
with the pressure
caused by the fluid.
The windows 41 in the wall of the tube-shaped front end 36 provide access for
the media (n order
to expand the collar 37. The medium rushes into a ring chamber 42 provided
between the casing
of said tube-shaped front end 36 and the interior wall of the ring collar 35.
The ring chamber 42 is
closed on the plunger side by means of a transverse wall 43 on the plunger
shaft 31.
Closer to the interior 22 of the bottle 2 is the inlet valve V2 which also
consists of an elastic
material and which is disk-shaped. It is equipped with a centrally located
valve locking piece 44
which is supported by crosspieces 45 that leave a flow path between them.
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The crosspieces 45 extend substantially radially. They preferably curve in the
shape of an S to
achieve the opening and closing flexibility for the valve locking piece 44.
The valve locking
piece's 44 valve seat on the housing side is designated with 46.
The inlet valve V2 is supported by the bottom 47 of the pump chamber 7
opposite to the mouth
piece opening 9 and is held in position by the pump plunger restoring spring 8
in that the winding
at its end pushes the disk-shaped body of the inlet valve V2 againsl the
bottom 47.
The opposite end of the pump plunger restoring spring a acts as a load against
the cross
section-reducing shoulder 30 in the interior of the hollow pump plunger 6.
As shown in Fig. 3, the end of the pump plunger 6 opposite to the shoulder 30
is rotation
symmetrically formed into a ring lip. It forms an edge 48 while the cross
section of the remaining
cylinder wall of the pump plunger 6 recedes. The edge's 48 larger cross
section opening trails on
the wall of the pump chamber 7.
Following a short horizontal channel section, the valve seat 46 changes to a
vertical channel
section 49 which continues in a connection piece 50 where an ascending pipe 51
is clamped on.
The ascending pipe 51 nearly reaches the bottom of the bottle 2.
For a tight fit between the spray pump 3 and the bottle the housing 4 forms a
ring wall 52 at its
underside.
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The ring wall 52 is pushed into the opening al the neck 1 to provide a tight
seal.
In order to attach the spray pump 3 the housing 4 is plugged onto the neck 1
of the bottle 2 by
means of a plug-in/clip connection. This is achieved with a plug-in collar 53
which is equipped
with locking fingers 54 located on diametrically opposed sides. By means of an
irreversible snap
connection, the locking fingers 54 engage in a blocking flank 55 on the neck
1. This is provided
at the underside of a collar-like projection and is overrun in forward motion
by the locking fingers
54 acting like barbs.
The blocking flank 55 represents the upper end of a cavity 56 on the casing of
the neck 1, The
width of this cavity 56 in circumterential direction of the neck 1 corresponds
to the width of the
locking fingers 54 which also achieves an advantageous rotation lock. This
results in a defined
orientation for the hammer head-like spray pump 3 with respect to the bottle
body which may be
designed flat in the same direction.
Wlth respect to the supply lines 40, it should be noted that they end
tangentially in a collecting
chamber which creates a swirl chamber 57. This causes a rotation effect and
thus generates a
stable stream.
The discharge valve V1 is mounted non-rotating in the ring chamber by means of
an eccentric
projection 58 which projects into a matching recess (not shown) in the ring
collar 35.
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The variant of the spray pump 3 illustrated in Figs. 5 through 8 is designed
according to the same
principle. The reference Nos. are used accordingly. Any extensive applicable
specifications are
not repeated.
The modified ajr compensation system is discussed first. With respect to
activation, it has been
shifted to the range of action of the pump plunger 6. The latter represents a
productive functional
part of this system. The pump plunger 6 acts as a slide.
In actuality, this is embodied in that the housing wall 60 is equipped with a
ventilation aperture 61
on a plane of projection on the bottle neck 1. The aperture 61 provides the
shortest possible flow
connect on between the pump chamber 7 and the interior 22 of the bottle 2. The
ventilation
aperture 61 extends on the underside of the housing 4 as defined by the ring
wall 52. The latter
is pushed into the opening on the bottle neck 1 to seal.
In pump starling position (also see Fig. 5), the ventilation aperture, the
mouth 62, on the pump
chamber side is closed by the casing of the pump plunger 7. As shown, said
mouth 62 extends
directly behind the edge 48 of the pump plunger 7 which edge acts as a piston
ring 63.
A second piston ring, designated with 64, is provided axially spaced apart and
offset in the
direction of the mouth piece opening 9 of the spray pump 3. Both piston rings
83, 64 are pointed
in the form of a lip in the direction of their free ends. With respect to the
discharge direction, the
piston ~ngs 63, 64 are receding and have a pitch of approx. 30° with
reference to the axis x-x.
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In thepumpstartingposition/alsoseeFig. 16 (sicllthemouth62 is approximatelyn
the
centerbetweenthe two pistonrings63. 64 whichare axiallyspacedapsrtand which
creates ring space65. Any excesapressure.whichmaybe causedby heat, is
transferred
to the ring chsmber65. This causesthe side of the secondpiston ring 64 on the
ring
spaceside to be pressedeven moretightlyagainstthe cylinderwall of the pump
chamber
7, therebyincreasinøhe sealingeffect. If the bottleshouldfall, no fluid is
ableto flow
out.
In pump plungeroperatingpositionlalso see Fig. 61 the interlor22 is
connectedwith the
atmospherevia the ventilationepsrture6l . On the dischargeside, i.e. behindths
second
pistonring 64. a path is openvis an intendedeskagebetweenthe housing4 snd the
mvuthpiecacap 33. The dischargedi4uidsubstanca23 is compensate~y the intlowing
alr.
Whenthehandlever5 is released.thepunnpplunger6 returnsto its startingposition,
illuatratedn Fig. 5, ss a resultof the springloading.
Accordingto the spraypump 3 variant,the inletvalve V2 is designedn such a wsy
that,
regar0lasaof whichof its surfacesmeetsthe bottom47 of the pumpchambar7. it is
slwaysproperlyplaced.This is dueto the mirrorsym~netricaldesign.Again.it is
basedon
a disk-shapednletvalvabodymadeof a readjustablematerlalwith a centrallylocated
valvelockingpiece44. However,the centrallyiocatedlockingpiece44, whichegsinis
attachedto crosspieces45, is now designedend identical,i.e. s barrel-
shapedocking
piece is equippedaxiallyon both sides or both ends, respectively~vith convex
hemisphericabnds.
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The end on the allocationside acts togetherwith the valve seat 46 on the
bottom47. The
centeraxis of the barrel-shapadockingpiece4 [sic) coincideswith the
rotationabxis x-x
of the pot-shapedmouthpiececap 33. In addition,this axis is identicsho the
longitudinal
centersxis of the pump plunger8.
A peripherakollarslso projectsrotationsymmetricallyvn both sides, formingor
delimiting,
on one side, a springhangertogethetwith a crosspiecefor the windingon the end
of the
pumpplungerrestoringspring8, and, on the othersids, togetherw'tth its
othercrosspiece,
it is seatedin a ring groovewith corresponding;ontourin the bottom47. As
illustratedin
Fig. 8, the crosspieces45 are S-shapedon said
plane,therebyprovidingsufficientapring
reservesfor the valve function.The crosspiecaring hss a virtualT-sectionwith
the T-
co~necto~beingcentrallyellgnedwiththevalvelockingpiece44. Infig.5, the disk
center
planeis des[gnatedwith E-E.
With respectto furtherdevelopinghe disChargevalve V 1, the pot-sh~eddesignhas
been
modifiedto a solid body. Referenceis made to Figs. 5 and 7.
Again.ths dischargevsivs V 1 is allocetedto the mouthpiececep 33 in such a way
that
the supplychannst:86, locatedon the fore-partof the dischargevalve V 1, can be
closed
with relstionto the decentrallylocatedmouthpisceopening9. The rotsdonguideis
an
annularring 87 attschedto the plungershaft 31 and engagingrotatingin a
corresponding
ring groovein the mouthpiececap 33.
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It also representsan irreversibhplug-inconnectiorfor bothparts.
The componentsof the dischargewalve V 1, whichis a moldablerubberpiece, at
least in
part, are a valvedisk 69 snd a stem 70 coaxiallyattachedtheretoand changingto
a
stopperpart 71. The designis rotationsymmetricaMrhilethe stopperpart 71,
whichis
basicallycylindrical,is tlattenedin two placesoverthe
entirelength.Theftattenedparts
are designatealwith72. Theyrepresen~ongitudina~hannels73 oppositeto the
cylindrical
interiorwall of the mouthpiececap 33 whichencompasseghe casingof the
stopperpart
71. The longitudina~hannels73 havethe crosssectionof the segmentsof a circle.
Said
flattenedparts 72 are diametricallyopposedand are verticsllyorientedin Fig. 5.
Runningangledin the directionof flow, the flattenedparts 72 or the
resultingiongitudinal
channels73, respectively join the supplychannels66 locatedon the front side of
the
stopperpart 71 _ The supplychannels66 are tsngentand run into a circularswirl
chamber
74. The tangentinflow is also diametricallyopposed.The supplychannels66
appearingn
the form of troughson the front surfacein Fig. 7 are covere~y the
interiorsurfaceof the
bottomof the mouthpiece cap 33.
The swirl chamber74 is eccentricwith respectto the rotationalsxis x-x of the
mouth
piececap 33. The sameappliesto the mouthpieceopening9 whichfomns the spray
nozzleof the spraypump 3. The mouthpiece opening9 is relocatedin that the
mouth
piece cap 33 is rotatedsuchthat the mouthpieceopening9 leavesthe supplyarea of
the
swirl chamber74 and thus is sealedand locatedin front of a part of the
dischergevalve~s
V 1 front surtacewhich does not containany channelsand whichhas a
lockingeffect.
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The valve functionof the valvedisk 69 is such that, in the directionof flow,
the upperpart
as seen in the drawing,is pushedover in the mannerof a valvetlap (see dash-dot
representatiorin Fig. 6). The connectingchannel32 providesa
stablesupportshoulder
76, orientedverticallyto the axis x-x, in that it createsa valve
storagespace75 which
has a clearlylargerdiameterthan the virtusllysegment-
shaped;onnecting~hanne132. The
dischargevalve V 1 is simptyinsertedthroughthe open end of the
valvestoragespace 75.
The mouthpiececap 33 is then clippedon to provides cover.
The stem 70 on the dischargevalve V 1 is axiallyorientedand is positione~n the
rangeof
the supportshoulder78.
As to the othertypeof bearingin the areaof the hingepointll, a
verticallyorientedlock is
provided~etweenthe bucklingbridgelsectionsa, b) and the housing4. The locking
connectioron the housingside of the secondbucklingbridgesectionb is achievedby
meansot a hook 77 whichis attachedto the abovementionedbridgesectionb. The
actual
hookhas referencaNv. 78. Thehook78 passesthrougha hole79 whichis providedin a
housingconsole80. The latter is attachedfreelyprojectingto the end of the
housing4
oppositeto the mouthpiece opening9. The anchoringhold is clearlyillustratedin
Figs. 5
and 8. These also showthat the hook 77 is adjacentto an
outersupportingcrosspiec~ 1
whosefrontsurface,whichis directedtowardthe upperside of the housingconsole80.
createsthe hingepointll in that it is thrustagainstthe console80. The
respectivecontact
pointis closeto butbehindthe hole 79, i.e. offsetin outwsrddirection.
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21
The supportingcrosspiece8l runssubstantiallyparailelto the shahof the hook 77.
The
shaft even has a certainspringfunctionlleaf spiralspring~and may be somewhat
lengthened,whichis demonstrated~y Fi9. 7.
The supportingcrosspieceBl is a component~f the end of the
respectivebucklingbridge
sectionb.
All disclosedcharactaristicaepresentan essentialpart of the invention.The
disclosureof
the applicetioralso includesthe complatedisclosedcontentof the
pertaining/attached
prioritydocumentslcopyot the pre-applicationlWhich also servesths purposeof
incorporatin~haracteristic~f thesedocumentsin the claimsof this application.
CA 02300109 2000-02-14
